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Implement URI encoding quirk for iTunes and Roku

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iTunes and Roku devices do not encode + as %2B in the query string and
do not encode space as + either in the query string (though at least the
Roku encode space as %20 everywhere). This needs to be worked around or
browse queries fail to parse because + was decoded as space when the query
really needs a + character.
This commit is contained in:
Julien BLACHE
2009-05-02 17:20:33 +02:00
parent 09ef188d90
commit c9868175fd
4 changed files with 110 additions and 19 deletions
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88
src/httpd.c
View File

@@ -49,15 +49,19 @@
/*
* HTTP client quirks by User-Agent, from mt-daapd
*
* - Roku:
* + Does not encode space as + in query string
* - iTunes:
* + Does not encode space as + in query string
* + Connection: Keep-Alive on HTTP error 401
* - Hifidelio:
* + Connection: Keep-Alive for streaming (Connection: close not honoured)
*
* These quirks are not implemented. Implement as needed.
*
* Implemented quirks:
*
* - Roku:
* + Does not encode space as + in query string
* - iTunes:
* + Does not encode space as + in query string
*/
@@ -715,6 +719,84 @@ exit_cb(int fd, short event, void *arg)
httpd_exit = 1;
}
char *
httpd_fixup_uri(struct evhttp_request *req)
{
const char *ua;
const char *uri;
const char *u;
const char *q;
char *fixed;
char *f;
int len;
uri = evhttp_request_uri(req);
if (!uri)
return NULL;
/* No query string, nothing to do */
q = strchr(uri, '?');
if (!q)
return strdup(uri);
ua = evhttp_find_header(req->input_headers, "User-Agent");
if (!ua)
return strdup(uri);
if ((strncmp(ua, "iTunes", strlen("iTunes")) != 0)
&& (strncmp(ua, "Roku", strlen("Roku")) != 0))
return strdup(uri);
/* Reencode + as %2B and space as + in the query,
which iTunes and Roku devices don't do */
len = strlen(uri);
u = q;
while (*u)
{
if (*u == '+')
len += 2;
u++;
}
fixed = (char *)malloc(len + 1);
if (!fixed)
return NULL;
strncpy(fixed, uri, q - uri);
f = fixed + (q - uri);
while (*q)
{
switch (*q)
{
case '+':
*f = '%';
f++;
*f = '2';
f++;
*f = 'B';
break;
case ' ':
*f = '+';
break;
default:
*f = *q;
break;
}
q++;
f++;
}
*f = '\0';
return fixed;
}
static char *http_reply_401 = "<html><head><title>401 Unauthorized</title></head><body>Authorization required</body></html>";
int